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I have an iframe on my page. As Safari blocks 3rd party cookies, I am trying to use the Storage Access API as suggested here under 'Developer Guidance': https://webkit.org/blog/10218/full-third-party-cookie-blocking-and-more/. I have copied the following code from here https://developer.mozilla.org/en-US/docs/Web/API/Storage_Access_API/Using#Accessing_a_user's_cookies_in_an_embedded_cross-origin_iframe:<script type="text/javascript"> window.addEventListener('load', () => { document.getElementById('test-button').addEventListener('click', () => { document.hasStorageAccess().then(hasAccess => { console.log('hasAccess: ' + hasAccess); if (!hasAccess) { return document.requestStorageAccess(); } }).then(_ => { console.log('Now we have first-party storage access!'); document.cookie = "foo=bar"; console.log(`document.cookie: ${document.cookie}`); }).catch(_ => { console.log('error'); }); }); });</script><button id="test-button">Test</button>Browser console output:[Log] hasAccess: true[Log] Now we have first-party storage access![Log] document.cookie:As you can see, the grant seems to be successful but still cannot set the cookie. Does anyone have an idea what's wrong? I am using Safari Version 13.0.1.Note: The enclosing page is a simple iframe tag with a src pointing to this page.